2190440879999 has 2 divisors, whose sum is σ = 2190440880000. Its totient is φ = 2190440879998.

The previous prime is 2190440879909. The next prime is 2190440880007. The reversal of 2190440879999 is 9999780440912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2190440879999 - 2⁸ = 2190440879743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190440879909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095220439999 + 1095220440000.

It is an arithmetic number, because the mean of its divisors is an integer number (1095220440000).

Almost surely, 2^{2190440879999} is an apocalyptic number.

2190440879999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190440879999 is an equidigital number, since it uses as much as digits as its factorization.

2190440879999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105815808, while the sum is 71.

The spelling of 2190440879999 in words is "two trillion, one hundred ninety billion, four hundred forty million, eight hundred seventy-nine thousand, nine hundred ninety-nine".